Quarterly report pursuant to Section 13 or 15(d)

Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail)

v2.4.0.8
Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
SecurityLoan
Sep. 30, 2013
SecurityLoan
Sep. 30, 2014
SecurityLoan
Sep. 30, 2013
SecurityLoan
Financing Receivable, Modifications [Line Items]        
Number of Loans 3 12 14 23
Pre-Modification Outstanding Recorded Investment $ 4,501 $ 3,133 $ 8,474 $ 5,809
Post-Modification Outstanding Recorded Investment 4,576 3,107 8,370 5,189
Consumer loans [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans       1
Pre-Modification Outstanding Recorded Investment       149
Post-Modification Outstanding Recorded Investment       149
Real estate loans [Member] | Hotel/Motel [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans    1   1
Pre-Modification Outstanding Recorded Investment   1,000   1,000
Post-Modification Outstanding Recorded Investment   1,000   1,000
Real estate loans [Member] | Gas station [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans 1 1 1 1
Pre-Modification Outstanding Recorded Investment 2,014 107 2,040 113
Post-Modification Outstanding Recorded Investment 1,991 91 1,991 91
Real estate loans [Member] | Other [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans 1 2    
Pre-Modification Outstanding Recorded Investment 395 1,011    
Post-Modification Outstanding Recorded Investment 385 1,014    
Real estate loans [Member] | Retail [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans     1  
Pre-Modification Outstanding Recorded Investment     2,002  
Post-Modification Outstanding Recorded Investment     1,856  
Real estate loans [Member] | Residential property [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans     1  
Pre-Modification Outstanding Recorded Investment     317  
Post-Modification Outstanding Recorded Investment     311  
Real estate loans [Member] | Other [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans     3 3
Pre-Modification Outstanding Recorded Investment     1,422 1,176
Post-Modification Outstanding Recorded Investment     1,386 1,144
Commercial and industrial loans [Member] | Commercial term [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans    8 5 15
Pre-Modification Outstanding Recorded Investment   1,015 327 1,787
Post-Modification Outstanding Recorded Investment   1,002 263 1,625
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans 1    3  
Pre-Modification Outstanding Recorded Investment 2,092   2,366  
Post-Modification Outstanding Recorded Investment 2,200   2,563  
Commercial and industrial loans [Member] | International loans [Member]
        
Financing Receivable, Modifications [Line Items]        
Number of Loans       2
Pre-Modification Outstanding Recorded Investment       1,584
Post-Modification Outstanding Recorded Investment       $ 1,180